Mr McLachlan has the fourth spot on the ticket and says, if elected, his strong business and finance skills would be an asset to the party.

"Well I think it's the state debt and deficit that's of great concern to all South Australians, particularly those in the business community and we need to have a strong and resilient South Australian economy so that we can provide for all South Australians," he said.

"I joined the party five years ago and during that time my desire to serve the people of South Australia has grown.

"I've been very active in the community with St John Ambulance and in the Army Reserve and I wanted to have an opportunity to continue my service to the state."